a no start issue (yes, i searched first)

[etay89]

Ok, I know I need timing, fuel, spark, and compression to make a motor go. I recently just built a motor (mods are up to date) and I tried to start it and yielded no results.

I did prime the motor. Tried to start it 4 times for 5-10 seconds each time.
Fresh gas is in the tank.
Everything is plugged in right and where they should be.
I know I have fuel and timed right. I have checked spark yet and don't have a way to check compression.
Afpr was rising to about 20-40psi while trying to crank.
Tried with or without maf plugged in (haven't fully converted to SD yet)
Had 1000cc installed...but removed them and installed the stock 450cc. I flashed the ecu to handle the 1000cc but flashed back to stock.
Now when I try to crank the car on, nothing happens except the fuel pump makes a noise. Crank doesn't turn, starter doesn't go or anything...battery is new and has a battery charger hooked up to it.

Ideas

 

[Bud92gsx]

Im on my phone so ill just ask.are u flashing the ecu,or do you have dsmlink or other tuner? Can you connect to the ecu?

 

[etay89]

Flashing the ecu. It connects and flashed the ecu fine

 

[Bud92gsx]

Interesting..I would re read to make sure you have everything hooked up.You have fuel and spark, I would think you would have compression with a rebuild.Possibly even ohm out some sensors, like the knock sensor,etc,to make sure they are still good.I dont see why they wouldnt be,but nothing wrong with double/triple checking to make sure.

When i had the same problem, I just swapped in a different ecu.It would crank till the battery died,but would not start.I put the other ecu in,and first try she started right up.

 

[Brandon Mau]

Yes I had the same issue ended up being the ECU as well. But you said that it doesn't even crank over? Did you check to make sure your starter is all hooked up correct?

 

[etay89]

It was cranking but wouldn't turn over

 

[Brandon Mau]

I would def. pull the ECU takes 5-10 minutes crack it open look at the resistors if they are leaking or corrosion, egg smell.

 

[etay89]

I would def. pull the ECU takes 5-10 minutes crack it open look at the resistors if they are leaking or corrosion, egg smell.

I'll check that out. A friend is letting me borrow his.

Any other ideas guys?

 

[Bud92gsx]

Honestly that's the easiest thing to try man.If the car starts right up, wwwweeeelllll.

 

[etay89]

Holset hx35+450s=winning

 

[delta448]

If the 450s are still installed, plug the MAS back in and flash the ECU back to the stock ROM. That at least it will eliminate a variable.

Sounds to me like your starter relay and MPI need checked. Do you hear the starter relay click in when you try to start?

 

[etay89]

The starter relay jarred loose and off. I reinstalled the 450s and plugged the maf in and still won't start....cranks but no go

 

[delta448]

So the engine turns over but won't fire?

Have you verified that the injectors are spraying and the plugs are sparking?

 

[etay89]

All the injectors reeked of gasoline so I'm guessing so I'm guessing I have fuel. I haven't verified spark (just been busy) or compression (no tester)

 

[Rsawd95dsm]

Well maybe you should verify spark because that probably could be the case

 

[etay89]

Well maybe you should verify spark because that probably could be the case

Although I admitted to not checking spark and compression and I love my dsm to death, I don't always have time to work on it or the necessary tools to do so. I will test spark and hopefully compression tomorrow evening.

My thing is what else can I check for if both are good.

 

[etay89]

I verified spark in all 4. Compression read 120-130-110-115. The starter motor keeps falling off...but I fixed that...

 

[delta448]

Compression's low in all 4, double check your timing marks on the cam sprockets and the crank. If the marks all line up you might try a leakdown test, or at least some compressed air to see where you're losing compression.

Are you still running a 2G CAS and CPS? If you are, then the timing being off can also cause the no start. Verify that the injectors are ALL firing, don't just assume they are because they smell like gas.

The starter's falling off? That might cause a no-start too. Just saying.

 

[etay89]

So I found that 2 of my injectors (450) are leaking.

Since the last time I said anything, I had my starter rebuild which did make a huge difference. I'm convinced that my injectors are the problem now

 

[NHerron]

What kind of cams are you running? Was the battery full when you did the compression test...

Those are really low numbers, like Zack said

But for my 2G, it usually won't start if the coolant temp sensor isn't plugged in. You can give that a quick test with the ohmmeter

 

[etay89]

What kind of cams are you running? Was the battery full when you did the compression test...

Those are really low numbers, like Zack said

But for my 2G, it usually won't start if the coolant temp sensor isn't plugged in. You can give that a quick test with the ohmmeter

Kelford 272, battery has been on charge and is a brand new battery

I thought it could be the ect sensor. I haven't ruled it out yet tho.

 

[NHerron]

Here is the way to test, just scroll down for the CTS

http://www.dsmtuners.com/forums/articles-miscellaneous/217951-how-diagnose-no-start.html

I also found this with a few more tips

DSM simple test page

 

[Rsawd95dsm]

Are we verified that you got the firing order in the right order? If you smell gas could mean that the spark isnt sparking at the right time just saying

 

[etay89]

Are we verified that you got the firing order in the right order? If you smell gas could mean that the spark isnt sparking at the right time just saying

From left to right 4-3-2-1 on the head, 4-1-2-3 on the coil pack. Spark plugs are tapped between .028-.032

Now, I'm sure I'm getting fuel to the rail, but since I has no friends except for a few who are always busy, I can do the injectors. I did recently put in a new filter and ss line from the tank to rail. Could there be an issue in regards to that? Clogged injectors? I know 2-3 are leaking from seals.